Sludge treatment agent and sludge treatment method

A sludge treatment and sludge technology, applied in the direction of dewatering/drying/concentrating sludge treatment, etc., can solve the problems of long treatment period, content, and difficulty in sludge dewatering, and achieve the effect of short treatment period and good treatment effect.

Inactive Publication Date: 2018-01-16
北京融达环科新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Mainly include: sludge dehydration difficulty, long treatment cycle, sludge contains certain harmful components

Method used

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  • Sludge treatment agent and sludge treatment method
  • Sludge treatment agent and sludge treatment method
  • Sludge treatment agent and sludge treatment method

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Embodiment Construction

[0022] The sludge treatment agent and the sludge treatment method will be further described in detail below in combination with the embodiments and the accompanying drawings.

[0023] The pH value, organic matter content, oxygen demand COD, germs, insect eggs, oil, color, turbidity and heavy metal ion content of urban sludge have exceeded the national solid waste discharge standards. This part of the sludge The aqueous mixture has not been effectively and safely environmentally friendly, harmless, and solidified. What's more, the effective comprehensive utilization of harmlessness, reduction and resource utilization has not been achieved. The national standard stipulates that the PH range of solid waste discharge is 6-9, while the PH value of the sludge formed by different urban sewage treatment plants does not change much, and most of them are weakly acidic and weakly alkaline. Sludge contains a large amount of organic compounds, and its COD value exceeds the standard. If it...

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Abstract

The invention provides a sludge treatment agent. The sludge treatment agent comprises the following components: 3%-15% of an RD-4 air entraining water reducing agent; 1%-25% of a sodium-based bentonite admixture; 1%-15% of Portland cement; 2%-25% of sulphoaluminate cement; 0.5%-2.5% of a surfactant; 1%-5% of a thickening agent; 1%-5% of gypsum powder; and 0.5%-2.5% of an organic acid. In the abovesludge treatment agent and a sludge treatment method, the sludge treatment agent adopted in the invention has water absorption thickening, deodorization and sterilization effects on water-containingsludge, and can break adsorption, wrapping and binding of a sludge particle structure to water molecules, so that the water molecules can be quickly released, the volume and weight of urban sludge with a high water content can be quickly and respectively reduced by half of an original volume and weight, purposes of reducing a quantity and rapid drying are achieved, thus treatment effects are good,and the treatment period is short.

Description

technical field [0001] The invention relates to the field of sludge treatment, in particular to a sludge treatment agent and a sludge treatment method. Background technique [0002] During the water treatment process of domestic urban sewage treatment plants, a large amount of solid waste such as sludge is formed, of which nearly 10 million tons of dry sludge need to be harmlessly treated and recycled after drying. In addition to a large amount of river bottom mud and lake bottom mud affected by sewage discharge, the solid waste that needs to be environmentally friendly and harmless for disposal and resource utilization reaches tens of millions of tons. In addition to the untreated urban sludge accumulated in the past and the cleaned river and lake bottom sludge, the total amount of sludge that needs to be treated, disposed and resourced in my country is nearly 100 million tons (wet sludge). These solid wastes must be Timely and effective environmental protection and harmles...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/14
Inventor 宫武伦严慧清
Owner 北京融达环科新材料科技有限公司
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